Home / 163,376.48-225,465-91,769.12

Finding the Fourth Proportional to 163,376.48, 225,465 and 91,769.12

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Solution

The fourth proportional to 163,376.48, 225,465 and 91,769.12 is: 126,644.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,376.48 : 225,465 = 91,769.12 : x
  2. Step 2: Convert to fraction form
    163,376.48/225,465 = 91,769.12/x
  3. Step 3: Cross multiply
    163,376.48x = 225,465 × 91,769.12
  4. Step 4: Simplify right side
    163,376.48x = 20,690,724,640.80
  5. Step 5: Solve for x
    x = 20,690,724,640.80/163,376.48
  6. Step 6: Final answer
    x = 126,644.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.